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First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil
Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and has a metallic luster. It is composed of Wt. 94.42% Pt and 5.56% Cu (n=9), yielding the empirical formula Pt6.78Cu1.22. This groundbreaking discovery marks the first documented occurrence of kitagohaite in South America. This hydrothermal deposition of kitagohaite indicates that its mineralization is constrained to temperatures <500º C, as inferred by the stability of synthetic Pt7Cu.
First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil
Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and has a metallic luster. It is composed of Wt. 94.42% Pt and 5.56% Cu (n=9), yielding the empirical formula Pt6.78Cu1.22. This groundbreaking discovery marks the first documented occurrence of kitagohaite in South America. This hydrothermal deposition of kitagohaite indicates that its mineralization is constrained to temperatures <500º C, as inferred by the stability of synthetic Pt7Cu.
First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil
Cristiano Sampaio (author) / Herminio Arias Nalini Jr. (author) / Cristiane Paula de Castro Gonçalves (author) / Geraldo Magela Santos (author) / Ana Ramalho Alkmim (author)
2023
Article (Journal)
Electronic Resource
Unknown
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Weathering of metapelites from the Quadrilátero Ferrífero mineral province, southeastern Brazil
| Online Contents | 2017
Weathering of metapelites from the Quadrilátero Ferrífero mineral province, southeastern Brazil
| Online Contents | 2017